Tellurian



(No Model.)

H. N. PELKEL.

TELLURIAN. Np. 408,800. Patented Aug. 13, 18.80l

UNITED STATES PATENT OEEICE.

HENRY N. FELKEL, OF DE FUNIAK SPRINGS, FLORIDA.

TELLURIAN.

SPECIFICATION' forming part of Letters Patent No. 408,800, dated August 13, 1889. i

Application iiled April 22, 1889. Serial No. 308,125. (No model.)

To all whom it' may concern:

.Be it known that I, HENRY N. FELKEL, a citizen of the United States, residing at De Funiak Springs, in the county of IValton and State of Florida, have invented certain new and useful Improvements in Tellurians; and I do hereby declare the following to be a f ull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of my invention is to provide a i tellurian that, while simple in construction,

shall serve to illustrate an unusual variety of phenomena such as engage the attention of students of elementary astronomy. Itis fully shown in t'he accompanying drawings, in which- Figure l is a side elevation of the device, a small portion being broken away to show concealed parts. Fig. 2-is a partial section through the axis of the part parallel to the plane of projection in Fig. l. Fig. 3 is a section at :t at, Fig. l, looking downward.

In the drawings, A is any suitable base o r pedestal to which is ixed a vertical standard or shaft B. Upon this shaft is revolubly mounted a horizontal bar C, bearing at one end a non-revoluble vertical shaft I), having fixed upon its free upper end a band-pulley F. Above the bar C bevel-gears II I are iixed to the shaft B to engage, respectively, a pinion I-I', xed to a hollow shaft B', revolubly mounted in rigid supports G G' G" uponthe bar, and a gear I', removably fixed upon a shaft B", revolving in the shaft B', and a support G'", rigidly secured to the bar. The shaft B' at the end opposite the pinion II' bears a bevel-gear II", which meshes with a like gear H'" upon asmall vertical shaft J, whose upper end is connected by a universal coupling K with an oblique shaft J', bearing upon its outer end an earth-n1odel L. The shaft B" has fixed upon it a bevel-gear I", engaging a like gear I' mounted upon the lower end of a hollowshaft M, concentric with the shaft J, and having at its upper end an arm N, supporting the oblique shaft J'. Upon the shaft B', between the gears H' II", another bevel-gear I-I4 is adjustably xed by a set-screw a', and this engages a similar gear H5, revolving about the same axis as the shafts `the sun.

lthe top of this fulcrum-like support, while the hinge permits it to swing bodily inward and outward. The lower end of the rod P bears a revoluble ball Q, which travels in an internally-enlarged groove R in the edge of an inclined disk V, eccentrically fixed upon the hollow shaft M. A slotted guide O', branching out from the support O, keeps the rod at all times in the plane of this guide and the support.

Above the gears II I the shaft B bears a fixed arm S, in which is mounted a shaft T, carrying upon its upper end a model L" of This shaft is provided with a pulley F', driven from a double pulley F, revolubly mounted upon the shaft B and connected with it by a belt U. Then the bar C is revolved, the double pulley receives motion through a belt U', passing around it and the fixed pulley upon the shaft D.

Now, in operation the bar C bein g revolved in its own plane, the earth and moon models will be carried bodily about the sun-model, and the latter will revolve upon its own axis under the action of the pulleys F F' F" and their belts. At the same time the pinion H', traveling around the fixed gear II, transmits motion, through the shaft B', gears H" H'", and coupled shafts J J', to the earth-model L, causing its comparatively rapid (diurnal) rotation upon its axis, held at an inclination of twenty-three an d one-half degrees by the su pporting-arm N. Meantime the gear I', traveling around the fixed gearI, imparts, through the shaft B" and gears I" I' aslow rotation of the shaft M and arm N in the opposite direction, and since the gears I I' and I" I'" are of precisely the same size this retrograde rotation is always exactly equal to the forward rotation of the arm C, and the inclined IOO causing the moon-model to approach and recede from the earth-mod el, illustrating apogee and perigee. 'lhe disk, by its inclination, also rocks the rod I upon its fulerum, and thus throws the moon-model alternately above and below the plane of the earth-models orbit. It is also to be observed that the comparatively slow motion of the disk, already de scribed, causes the moons nodes to fall, as 1.o they should, at different points in the orbit of that body. It is further obvious that the sunmodel being at some distance from the center of the earth-models orbit, each revolution ofthe bar (l shows that body in perihelion and aphelion.

The several gears are so proportioned that a single revolution of the bar C, while producing, as has been said, one Contrary revolution of the shaft M, also produces about thirecteen revolutions of the moon-model about the earth-model.

The set-screw a being loosened, the gear I may be disengaged from the gear I, when the arm N may be moved eastward through a 2 5 small arc. The gear being then replaced and the bar C rotated, We exaggerate and illustrate in a single revolution the phenomenon of procession.

Tides, eclipses, and other lunar phenomena 3o may be Very conveniently illustrated, after loosening the milled set-screw a and disengaging the gear Il, by rotating the gear Il with the thumb and linger, no change of position being required on t-he part of the op- 3 5 erator.

Instead of the usual signs of the Zodiac painted upon the pedestal or base, I support a star L", from the base at a point out- Side the orbit of the earth-model, and by iis 4o aid precession and synodic and sidereal pe* riods of the moon are illustrated.

Itis evident that well-known mechanical expedients may in several places replace the devices I have shown--as, for example, belts may replace gears, and vice versa, or another connection may be substituted instead of the ball and groove of the rod I and disk V; and

I do not therefore wish to limit myself to the exact forms shown.

\Vhat I claim as new, and desire to secure by l.. The combination, with the shaft Il, bearing the fixed gears II I, of the bar piyoted thereon, the earth and moon models mounted 0n geared supports borne by the bar, the

shafts Il 3, mounted also upon the bar, the gear I, detaehably engaging the gear I and imparting motion to the shaft B, gearing transmitting the motion of said shaft to the earth-model support, and gearing engaging the gear II and imparting motion, through the shaft 13, to the earth-model axis and to the moon-model support.

2. The combination, with the shaftB,bear ing the fixed gears II I, of the bar pivoted upon said shaft, the earth and moon models mounted in geared supports upon thebar,the independei1tly-revolubleshaftsl )",mounted also upon the bar, the gearing engaging the gear I and imparting motion, through the shaft B, to the earthmodel support, gearing engaging the gea-r II and imparting motion, through the shaft Il ,to the earth-model axis, and the gear Il", mounted upon the shaft l and detaehably engaging the geared moon model support.

The combination, with the rotating moon model support, of the jointed standard O thereon, the curved moon-model wire I, pivoted in the top of said standard and provided with the revoluble terminal ball Q, the vertical shaft l\l, concentric with said support and bearing the oblique earth-model axis, and the oblique disk V, eccentrieally mounted upon the shaft M and receivingin itsgrooved edge said ball Q, whereby the rotation of said snpport and shaft may impart to said Wire a bod ily inwardand-outward movemen'tand adis tinet rocking motion upon its pivot, substantially as and for the purpose set forth.

et. The combination of the base A andthe fixed shaft B rising therefrom, the gears 1I I, fixed thereon, the sun-model mounted at one side of said shaft, the b`ar C, pivotally supported upon the shaft, the fixed pulley F, snpported upon the bar and rotating said sunmodel by pulley-and-belt con ncetion, the earth and moon models mounted in suitable supports upon the opposite end of the bargear ing engaging the gears Il I and transmitting suitable motion to both sun and moon models, and the star L", supported from the base without the paths of the various models, substantiallv as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

I IENRY N. FELKEI..

lVitnesses:

L XV. PLANK, 'l. F. MeGounrN.

IOO

IOS 

